FREE · TEXT TOOLS
Duplicate Line Remover.
Remove repeated lines with optional case-insensitive and trimmed matching.
How to use Duplicate Line Remover
Paste a list, choose matching rules, then remove duplicate lines.
How it works
Exact matching treats spaces and letter case as significant. Optional trimmed matching ignores outer whitespace, while case-insensitive matching groups differently cased lines. The original first occurrence is preserved, making the order predictable.
Example
apple, banana, apple on separate lines → apple, banana.
Questions about Duplicate Line Remover
Is Duplicate Line Remover free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Maximum 200,000 characters. The first matching line is kept. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.